The map is a redrawing by Christopher Tolkien from J.R.R. Tolkien's "second 'Silmarillion' map", which was divided on four sheets and which was the last map of Beleriand that John Ronald made (the "original" maps, without alterations, were reproduced in The Lost Road).[1] However, Tolkien continued to add and change names or features on the map manuscripts; these were reproduced by Christopher in The War of the Jewels.[2]